Which of the following materials is considered biodegradable waste?

Biodegradable waste refers to materials that can be broken down by natural processes, particularly by microorganisms such as bacteria and fungi. Paper products fall into this category because they originate from trees and other plant materials, which can decompose under the right conditions.

When exposed to moisture and microorganisms, paper can break down relatively quickly compared to other materials. This decomposition process results in nutrient-rich organic matter, contributing to soil health and helping to sustain ecosystems.

In contrast, plastic containers and glass bottles do not naturally decompose in a meaningful timeframe and can persist in the environment for years or even centuries. Similarly, metal scraps take a long time to corrode and break down, making them non-biodegradable. Consequently, paper products are the correct answer as they are the only option that readily decomposes and can be composted, thereby returning nutrients to the soil.